Double truck mine car body



June 1949- K. R. HAMMERSTROM DOUBLE TRUCK MINE CAR BODY 3 Sheets-Sheet 1Filed May 12, 1945 K. R. HAMMERSTROM DOUBLE TRUCK MINE CAR BODY June 21,1949.

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Patented June 21, 1949 UNITED STATES PATENT OFFICE DOUBLE TRUCK BODEYKarl .R. Hammerstrom, Dormant, Ba. ,.assignor.to United States SteelCorporation oiDelaware, a

corporation of Delaware Application May 12,, 1945, :Serial 1210.259331]?'7 Claims.

bolsters that vare flush with the end floors and.

thus avoiding any pockets or obstructions which would trap :lading inthe body ends.

Specific examples of the invention are illustrated by the accompanyingdrawings, in which:

Figure 1 is a plan;

Figure 2 is an elevation;

Figure 3 is :a longitudinal section from the line IIIIII in Figure 1;

Figures 4 and-55 are cross sections from the lines IV-IV and V--V inFigure 2; and

Figure 6 is a modification of .the invention.

More specifically, these drawings show a truck mine car body having, ateither end, a :box section body holster with its webs formed byarranging themutually adjacent end portions of the bodyfs end andintermediate floor plates, I and 2 respectively, in overlapped andvertically ofiset relation with the end floor plate I over or above theintermediate floor plate 2 and with the flange of this box section bodybolster formed by flanges 3 and 4 joining the two floor plates I and 2with each other. The flange 3 is formed by bending down a portion of theoverlapped end portion of the end floor plate I and joining it with theopposing upper face of the intermediate floor plate 2, and the flange 4is formed by bending up a portion of the overlapped end portion of theintermediate floor plate 2 and joining it with the opposing bottom faceof the end floor plate I.

A modified way of providing the flanges 3 and 4 is shown by Figure 6 andis by using angle bars 5 and 6 arranged parallel to each other inbox-section-like manner with their legs forming the boxsection-like websarranged flatly against the overlapped end portions of the floor platesI and 2 and joined thereto, and with their legs forming thebox-section-like flanges arranged respectively about flush with the endsof the overlapped end portions of the floor plates I and 2 and joinedthereto and to the opposing faces of these end portions to form theflanges 3 and 4.

A body center bearing 1 is joined to the bottom of the intermediatefloor plate 2 beneath the described box section bolster so as to receivethe body loading from the bolster, and this center plate has arms 8flaring toward the bolster ends providing increased depth to the bolsterat its central portion, thus providing means to keep the floor height toa minimum and bending stresses in the bolster relatively uniformthroughout.

Body side bearings 9 are also joined with the bottom .of the floor plate2 intermediate the body center bearing and the ends of the box sectionbolster.

The box section body bolster internally has longitudinal .stiflenersextending from one of its side bearing portions to the other, theseportions being those above the. side bearings 9. These stifieners are inthe form of plates I0 and II joined flatly to the insides of the webs ofthe v bolster, anda vertical plate I2 running along the bolster centerline and joined with the bottom tacesof the. plate ID and having itsends ter-.

with the plate Ill. The plate II is a little longer than the platev I2and extends more closely to the side bearing portions, while the plateIll ,is long enough so that it may be joined to the inner sides of thetransverse plates I3.

The end portion of the end floor plate I away from the flange 3 and atthe car end is bent to form an upstanding end flange I4, and its sideportions are bent to form upstanding side flanges l5, these flanges I4and I5 being joined to the body end sheet I! and to the body side sheetsI6. The intermediate floor plate 2 has both its side portions and itsend portion away from its end providing the flange 4, bent upwardly toprovide side flanges I 8 to which the body side sheets I6 are joined,and an end flange 20 to which the center floor plate 2| is joined.

The end floor plate I and its various flanges is a single piece ofpressed steel plate, the same applying to the floor plate 2 and itsvarious flanges.

In instances where the plates are bent the bending should be done toprovide Well rounded corners preventing the accumulation of the carlading as much as possible. The various parts are preferably made ofsteel plates or sheets, excepting the body center bearing which is acasting, and the joining of these parts is preferably done by welding.

I claim:

1. A truck mine car body having a box section body bolster with its websformed by arranging the mutually adjacent ends portions of the bodys endand intermediate floor plates in overlapped and vertically ofisetrelation with the end floor plate over the intermediate floor plate, andwith its flanges formed by angle bars arranged parallelly inbox-section-like manner with their legs forming the box-section-likewebs arranged I flatly against the overlapped end portions of said floorplates and joined therewith and with their legs forming thebox-section-like flanges arranged respectively about flush with the endsof the overlapped end portions of said floor plates and joined therewithand with the opposing faces of these end portions.

2. A truck mine car body having a box section body bolster with its websformed by arranging the mutually adjacent end portions of the bodys endand intermediate floor plates in overlapped and vertically offsetrelation with the end floor plate over the intermediate floor plate, andwith its flanges formed by flanges joining said floor plates with eachother, said bolster internally having longitudinal stifieners extendingfrom one of its side bearing portions to the other.

3. A truck mine car body having a box section body bolster with its websformed by arranging the mutually adjacent end portions of the body's endand intermediate floor plates in overlapped and vertically offsetrelation with the end floor plate over the intermediate floor plate, andwith its flanges formed by flanges joining said floor plates with eachother, said bolster internally having longitudinal stifleners extendingfrom one of its side bearing portions to the other one thereof in theform of plates extending longitudinally of said section and joinedflatly to the insides of its webs and a vertical plate running along itscenter line and joined with the bottom face of the upper one of saidplates, along with vertical transverse plates in line with the sidebearing portions and joined with the upper one of said plates.

4. A truck mine car body having a box section body bolster with its websformed by arranging the mutually adjacent end portions of the bodys endand intermediate floor plates in overlapped and vertically oflsetrelation with the end floor plate over the intermediate floor plate, andwith its flanges formed by flanges joining said floor plates with eachother, said body having a depending truck center plate receiving bodyloading from the bolster and which has arms flaring toward the bolsterends providing an increased depth of bolster at the higher stressedportions adjacent the center plate.

.5. In a mine car body having an intermediate floor plate and a pair ofend floor plates joined to opposite ends of said intermediate floorplates and being at levels thereabove, bolsters at the regions ofjoining of the end floor plates to the intermediate floor plate andextending continuously from side to side of the car, said bolsters beingof box-like configuration and including top and bottom webs and flangesjoining said webs, said top webs being integral extensions of said endfloor plates and said bottom webs being integral extensions of saidintermediate floor plate.

6. In a mine car body as defined in claim 5, the top and bottom bolsterwebs being respectively at the same levels as the end and intermediatefloor plates.

7. In a mine car as defined in claim 5, the bolster webs beinghorizontally disposed and the bolster flanges being vertically disposed,the flanges being integral extensions of the webs in planes normalthereto.

KARL R. HAMMERSTROM.

REFERENCES CITED The following referenfces are of record in the2,256,885 Bruss Sept. 23. 1941

